Claudius g



(No Model.)

GAS MIXER.

No. 509,369. Patented Nov. 28, 1893.

WITNESSES:

ATTORNEY emu.

. UNITED STATES PATENT OFFICE.

' CLAUDIUS e. FREEMAN, OF LOUISVILLE, KENTUCKY, ASSIGNOR, TO WILLIAM H. MATLAOK, or SAME PLAo 1 GAS-MIXER. j

srEcIEIcATION forming part of Letterslatent No. 509,369, dated November 28, 1893.-

Applicationfilcd July 6,18l33. serin nauates. (NomodeL) State of Kentucky, have invented new and useful Improvements in Gas-Mixers, of which the following, taken in connection with the accompanying drawings, is a full, clear, and

exact description.

. Theobject of'this invention is to provide a gas mixer for use with natural gas burners whereby a mixer will be produced which may be readily adapted to the varying conditions of pressure from the mains, and which will be absolutely reliableat all times, with no I To that end I have produced the device shown in the loss of time in practical operation.

horizontal sectional view, inverted, taken on.

line 22- of Fig. 1. Fig. 3 is an isometric perspective of the regulating-valve, and Fig.

4 is a similar view of a modified form of the same. 1

' In the annexed drawings similar letters of reference denote corresponding parts in all views. 7

In gas-mixers as usually constructed there are openings of an arbitrary size leading from the supply pipes to the mixing chamber,

. which, if the gas pressure be too high may be too large to expose the-proper amount of gas area, in which case the exposed gas area cannot be reduced. area prove too small because of lower pressure the openings must be reamed out to increase the flow, in which case the amount of reaming becomes frequentlymerely unreliable guess work.

v In the drawings A-- is a mixing chamher which is my preferred .style of construction, though its form may bealt'ered, without departing from the spirit of my invention. It is essential, however, that the upper portion in the general shape of an inverted funnel be retained in the same general form, as that is On the other hand if the gas.

heating purposes, as this isintended to, be used. 1

o I I I V v e I 13-.- 1s the gas-cylinder across the lnteriorof which is the bridge O which is provided with an internally screw-threadedopeningfor receiving the screw-threaded end of f the graduated and adjustable valve -E which valve is intended to control the supply of natural-gas to be admitted into the mixing chamber A.

ings -D which are intended to permit entrance of external air into the interior of said chambertopermitadmixture of the same with the natural gas passed through the valve -E The upper end of the valve -E ternates in a square head a which is provided so as to permit of properly placing thereon an ordinary key to screw up or down the said valve in its seat thus furnishing ready means of adjusting said valve to compensate for any degree of pressure as found in the various localities in which natural gas is usedas fuel and admit into the mixer-chamber the proper proportion of atmospheric air and natural gas to secure perfect combustion.

The circumferential face of the valve -E is provided with aseries of graduated grooves II-- which are of sufficient depth at their base -or lower end and terminate at zero at their upper ends, thus securing a wide range of exposed gas areas to meet the demand in- I cident to the varyinggaspressures commonly is the most desirable form of mixer where it is provided as shown with asufiicientnumber of'openings for the admission of external air, as this form of construction permits it being readily placed upon and removed from the supplypipe B-, and in addition to that it has been found in practice thatv back-flashes from the burner will be less dangerous or liable' to cause ignition of the gas within such too . 6 I The chamber A+ is provided with open- The general pear-shaped mixing chamber pear-shaped chamber, as is sometimes com-t mon to other mixers in general use with natural gas where used for fuel.

The operation of my device is as follows: The parts being assembled as shown in the general sectionalviewFig. 1and the burner attached to the screw-threaded upper end the natural gas is admitted to the portion B from whence it flows through the openings H in the valve E into the chamher A where it becomes mixed with the atmospheric air admitted into said chamber through the openings -D'-, the pressure .of

gas carrying the air up into the funnel shaped portion I where the admixture takes place preparatory to passing to the burner whereit is consumed. In case the pressure is not sufficiently great the key is applied to the squared head "aand the valve E and its stem G- are raised thus bringing the graduated grooves H- higher andpermitting a greater quantity of gas to pass into the lniXer.- In case the pressure is excessive the valve islowered so as to bring the smaller portion of the graduated grooves into coincidence with the upper portion of the gas cylinder B- and lessen the supply.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the described class, a gascylinder, a screw-threaded cross-bridge therein, a graduatedv valve seated adjustably in said bridge at one .end and provided near its opposite end with a-series of graduated gas channels or passages, all substantially as specified.

2. In a device of the described class,a pearshaped mixing chamber, a gas-cylinder, a screw-threaded bridge therein, a check-valve 40 Within said gasecylinder, ascrew-threaded depending stem integral with said valve fitting in said bridge, graduated channels in the c1rcumferential face of said valve and a keyseat at the upper end of said valve, allin combination, substantially as specified.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses, at Louisville, in the co unty of Jefferson, in the State of Kentucky, this 3d day of June, 1893.

GLAUDIUS G. FREEMAN. v

Witnesses:

FREDERICK H. GIBBs, CLAUDE G. MATLACK. 

